<div class="panel {{class}}">
    <div class="panel-heading {{hadingClass}}">
        <ng-content select="wf-panel-heading"></ng-content>
    </div>
    <div class="panel-body {{bodyClass}}">
        <ng-content select="wf-panel-body"></ng-content>
    </div>
    <div class="panel-footer {{footerClass}}" *ngIf="footer">
        <ng-content select="wf-panel-footer"></ng-content>
    </div>
</div>